Complete Employee Email List Needed

I need a clean, up-to-date email directory for our entire company, delivered as a single CSV file. Each row should include four columns—Name, Job Title, Department, and Email Address—covering every active employee on our roster.

To make integration with our internal tools painless, please:
• Keep the header names exactly as listed above.
• Ensure addresses are valid and deduplicated.
• Use UTF-8 encoding so special characters display correctly.

I will review the file for completeness and spot-check accuracy before sign-off, so verifiable data is essential. If you already have an approach for gathering and validating corporate contact data, let me know in your bid along with an estimated turnaround time.